[BirdOPrey5]

No, you need to put it back to

global $mv_hide_link, $vbulletin;

if ($mv_hide_link)
{
  $vbulletin->templatecache['polloptions_table'] = str_replace('<a class="textcontrol"', '<a style="display: none;"', $vbulletin->templatecache['polloptions_table']);
}

else it will be disabled for everyone all the time... It just means I need to find out why $mv_hide_link isn't "true" on your forum.